Osteoid

Definition

Osteoid is the unmineralized, organic portion of the bone matrix that forms prior to the maturation of bone tissue. It consists mainly of collagen and provides a framework for the deposition of calcium and other minerals.

Related terms

Collagen:

A protein that is a major component of connective tissues in the body, providing structural support.

Mineralization: The process by which minerals are deposited in the matrix of bones and teeth, giving them hardness and strength.

Bone Matrix:

The extracellular substance of bone tissue, consisting of collagen fibers and ground substance that becomes hardened by mineral deposits